Ok, thanks guys, I finally got it. The problem was that I downloaded a FIRMWARE.BIN but it actually wasn't
(~~) It was just the text explaining about the firmware,strange. And after I threw into TextEdit again, I recognized the SPFI.
Mann, was I h…
Hello Julian, what do you mean by a short somewhere to a neighbouring pin?To solve the problem of the cold joint, i can solder again on top of the place where theres already soldering on it?